[NTLUG:Discuss] More Problems

[william jones]

----- Original Message ----
From: Dennis Myhand <dmyhand at ednaisd.org>
To: NTLUG Discussion List <discuss at ntlug.org>
Sent: Friday, February 23, 2007 11:41:34 AM
Subject: [NTLUG:Discuss] More Problems


I am having more problems with my Debian System.  Yesterday after I came 
home from work when I moved the mouse to clear off the screen saver 
nothing happened.  The screen saver stayed put and there was no input 
from the mouse.  I did a hard restart since trying to get any response 
by the keyboard was not doing any good either. After the restart, when 
it got to offering the option to go into bios setup, I did so I could 
see if it was overheating again.  It was not over heating and the fan 
was turning.  I let the system start, worked with it for about 20 
minutes, left and came back an hour later and it had locked up again.  I 
did another restart, worked with it for about 15 minutes and it locked 
up without the screen saver coming up.  Does anyone have a suggestion as 
to what the problem might be?  Thanks, Dennis

Dennis,

This might be a power supply problem.  The easy check is to monitor the 5v and 12 volt supplies during operation.  If one goes down or misbehaves at the time of lockup, then isolate to find out why.  The supplies can be monitored at any spare disk connector.  Yellow=+12v, red=+5v, black=ground.  Use a cheap voltmeter to monitor the voltages during operation.  Absolute value is not too important; plus or minus about ten percent is all right if the computer is working.  Steady voltage is important.  A swinging or vibrating pointer on the voltmeter, or a dropoff to zero, are bad.  If the voltages remain stable when the computer fails, look elsewhere.  I have had bad video cards (including the graphics cpu), bad cpus, burned or broken conductors, ruined components, and cracked motherboards give me problems.
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